Filling device for gap between soil pressure box and soil body

Abstract

The filling device comprises an outer box and an inner box which are each provided with an opening in one side, the openings of the outer box and the inner box face each other to form a box body with a hollow inner cavity, the inner box is connected into the opening of the outer box in a sliding mode, an air bag is arranged in the hollow inner cavity of the box body, and the air bag is connected with the outer box in a sliding mode. The air bag is connected with an air pipe, the other end of the air pipe is connected with an air inflation device with a barometer, the air inflation device is used for inflating the air bag through the air pipe to open the outer box and the inner box so that the outer box and the inner box can move oppositely, and the box body is provided with a non-return mechanism for preventing the outer box and the inner box from moving oppositely. When the steel sheet pile is driven, the gap between the soil pressure box on the side wall of the steel sheet pile and the surrounding soil body is filled with the device, and the device is supported between the soil pressure box on the side wall of the steel sheet pile and the surrounding soil body, so that the problem that initial soil pressure data cannot be effectively measured due to the gap between the soil pressure box on the side wall of the steel sheet pile and the surrounding soil body when the steel sheet pile is driven is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical engineering testing, and in particular relates to a filling device for a gap between an earth pressure box and a soil body. Background Art

[0002] As a common retaining structure, steel sheet piles are widely used due to their high strength, convenient construction and reusability. Monitoring of retaining structures is crucial during the construction process. Affected by rain and external loads, the soil pressure around the foundation pit retaining structure directly affects the overall stability and safety of the retaining structure. As a common device for monitoring soil pressure, the soil pressure box is generally installed on the side wall of the steel sheet pile. When the steel sheet pile is driven, the vibration of the steel sheet pile causes a gap between the soil pressure box and the surrounding soil. The two cannot be in close contact, so it is impossible to measure the effective initial soil pressure, and it is impossible to provide accurate data for analyzing the pressure changes caused by the soil around the foundation pit on the retaining structure. Summary of the invention

[0003] In view of the problems existing in the prior art, the object of the present invention is to provide a filling device for the gap between an earth pressure box and a soil body.

[0004] To solve the above problems, the present invention adopts the following technical solutions: A filling device for the gap between an earth pressure box and a soil body comprises an outer box and an inner box, each of which is provided with an opening on one side, wherein the openings of the outer box and the inner box face each other to form a box body with a hollow inner cavity, wherein the inner box is slidably connected in the opening of the outer box, an air bag is arranged in the hollow inner cavity of the box body, an air pipe is connected to the air bag, and an inflation device with a pressure gauge is connected to the other end of the air pipe for inflating the air bag through the air pipe to open the outer box and the inner box so that the outer box and the inner box move away from each other, and a non-return mechanism is arranged on the box body to prevent the outer box and the inner box from moving toward each other.

[0005] Preferably, the inflation device is an air pump.

[0006] Preferably, the anti-return mechanism includes a ratchet bar and a pawl, the ratchet bar is arranged along the relative movement direction of the outer box and the inner box, one end of the ratchet bar is connected to the inner box, and the pawl is movably connected to the outer box and cooperates with the ratchet bar to prevent the ratchet bar from moving toward the direction close to the outer box.

[0007] Preferably, the pawl is provided with an elastic pressing device for pressing the pawl against the ratchet bar.

[0008] Preferably, the elastic tightening device is a spring.

[0009] Preferably, a mounting seat is provided on the inner wall of the outer box, and the mounting seat includes a top plate and two side plates, the two side plates are respectively arranged on both sides of the ratchet bar, the top plate spans above the ratchet bar, and its two sides are respectively connected to the two side plates, a sliding rod is connected to the back of the pawl, the sliding rod passes through the top plate and is slidably connected to the top plate, and the spring abuts between the pawl and the top plate.

[0010] Preferably, an unlocking device for making the pawl leave the ratchet bar is provided on the back of the pawl.

[0011] Preferably, the unlocking device is a pull rod connected to the end of the sliding rod.

[0012] Preferably, the unlocking device is two electromagnets respectively connected to the pawl and the top plate.

[0013] Preferably, a limiting block is provided at the end of the ratchet bar, and the height of the limiting block is greater than the height of the side plate.

[0014] Beneficial Effects of the Invention Compared with the prior art, the advantages of the present invention are: The present invention fills the gap between the earth pressure box on the side wall of the steel sheet pile and the surrounding soil when the steel sheet pile is driven, and is supported between the earth pressure box on the side wall of the steel sheet pile and the surrounding soil, thereby solving the problem that the initial earth pressure data cannot be effectively measured due to the gap between the earth pressure box on the side wall and the surrounding soil when the steel sheet pile is driven. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Sectional view of section AA; Figure 3 for Figure 1 A partial enlarged view of point B in the middle; Figure 4 for Figure 2 A partial enlarged view of point C in the middle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-4 The present invention provides a technical solution: a filling device for the gap between an earth pressure box and a soil body, comprising an outer box 1 and an inner box 2, each of which is provided with an opening on one side, wherein the openings of the outer box 1 and the inner box 2 face each other to form a box body with a hollow inner cavity, wherein the inner box 2 is slidably connected in the opening of the outer box 1, and an air bag 3 is arranged in the hollow inner cavity of the box body, wherein an air pipe 4 is connected to the air bag 3, and an inflation device 5 with a pressure gauge 51 is connected to the other end of the air pipe 4 for inflating the air bag 3 through the air pipe 4 to open the outer box 1 and the inner box 2 so that the outer box 1 and the inner box 2 move away from each other, and a non-return mechanism for preventing the outer box 1 and the inner box 2 from moving toward each other is arranged on the box body.

[0020] When in use, the outer box 1 or the inner box 2 is adhered to the surface of the earth pressure box on the side wall of the steel sheet pile, and the air bag 3 is inflated through the air pipe 4 using the inflation device 5, so that the air bag 3 expands and stretches the outer box 1 and the inner box 2 so that the outer box 1 and the inner box 2 move away from each other, thereby being supported between the earth pressure box and the soil. The non-return mechanism is connected to the box body to prevent the outer box 1 and the inner box 2 from moving toward each other and retracting. The pressure gauge 51 on the inflation device 5 displays the air pressure in the air bag 3 in real time. When the outer box 1 and the inner box 2 are supported between the earth pressure box and the soil and cannot continue to extend, the pressure value shown on the pressure gauge 51 increases rapidly. At this time, the inflation is stopped, indicating that the device has been in good contact with the soil. At this time, the earth pressure box can measure the effective initial earth pressure value.

[0021] The present invention fills the gap between the earth pressure box on the side wall of the steel sheet pile and the surrounding soil when the steel sheet pile is driven, and is supported between the earth pressure box on the side wall of the steel sheet pile and the surrounding soil, thereby solving the problem that the initial earth pressure data cannot be effectively measured due to the gap between the earth pressure box on the side wall and the surrounding soil when the steel sheet pile is driven.

[0022] Preferably, the inflation device 5 is an air pump. Of course, the inflation device 5 can also be an electric or manual air pump.

[0023] Furthermore, the anti-return mechanism includes a ratchet bar 61 and a pawl 62, the ratchet bar 61 is arranged along the relative movement direction of the outer box 1 and the inner box 2, one end of the ratchet bar 61 is connected to the inner box 2, and the pawl 62 is movably connected to the outer box 1 and cooperates with the ratchet bar 61 to prevent the ratchet bar 61 from moving toward the direction close to the outer box 1, thereby realizing the function of the anti-return mechanism to prevent the outer box 1 and the inner box 2 from moving toward each other.

[0024] Furthermore, when the pawl 62 is below the ratchet bar 61, in order to prevent the pawl 62 from sagging due to its own weight and away from the ratchet bar 61, thereby causing the anti-return function to fail, the pawl 62 is provided with an elastic tightening device 7 for pressing the pawl 62 against the ratchet bar 61, so that the pawl 62 is tightly connected to the ratchet bar 61. However, when the pawl 62 is above the ratchet bar 61, the pawl 62 will sag due to its own weight and approach the ratchet bar 61. At this time, the elastic tightening device 7 may not be used.

[0025] Furthermore, the elastic pressing device 7 is a spring.

[0026] Specifically, a mounting base 8 is provided on the inner wall of the outer box 1, and the mounting base 8 includes a top plate 81 and two side plates 82. The two side plates 82 are respectively provided on both sides of the ratchet bar 61. The top plate 81 spans above the ratchet bar 61, and its two sides are respectively connected to the two side plates 82. A sliding rod 621 is connected to the back of the pawl 62. The sliding rod 621 passes through the top plate 81 and is slidably connected to the top plate 81. The spring abuts between the pawl 62 and the top plate 81.

[0027] Furthermore, an unlocking device 9 is provided on the back of the pawl 62 for making the pawl 62 leave the ratchet bar 61, so that after the soil pressure box test is completed and the airbag 3 is deflated, the anti-return mechanism is unlocked, so that the outer box 1 and the inner box 2 can move toward each other and retract, making it easy to take out the device between the soil pressure box and the soil.

[0028] Furthermore, the unlocking device 9 is a pull rod connected to the end of the sliding rod 621. Unlocking can be achieved by pulling the pawl 62 away from the ratchet bar 61 through the pull rod, so that the ratchet bar 61 can move toward the direction close to the outer box 1, so that the outer box 1 and the inner box 2 can move toward each other and retract.

[0029] Furthermore, the unlocking device 9 is two electromagnets respectively connected to the pawl 62 and the top plate 81. By turning on the electromagnet, the pawl 62 moves upward, leaves the ratchet bar 61 and is sucked onto the top plate 81, thereby achieving unlocking.

[0030] Furthermore, a limit block 611 is provided at the end of the ratchet bar 61, and the height of the limit block 611 is greater than the height of the side plate 82. When the outer box 1 and the inner box 2 move away from each other, the limit block 611 at the end of the ratchet bar 61 is blocked by the top plate 81, preventing the ratchet bar 61 from falling out of the mounting seat 8, thereby preventing the inner box 2 from falling out of the outer box 1 and causing damage to the device.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filling device for the gap between an earth pressure box and a soil body, It is characterized in that The invention comprises an outer box (1) and an inner box (2), each of which is provided with an opening on one side. The openings of the outer box (1) and the inner box (2) face each other to form a box body having a hollow inner cavity. The inner box (2) is slidably connected in the opening of the outer box (1). An air bag (3) is arranged in the hollow inner cavity of the box body. An air pipe (4) is connected to the air bag (3). The other end of the air pipe (4) is connected to an inflation device (5) with a pressure gauge (51) for inflating the air bag (3) through the air pipe (4) to expand the outer box (1) and the inner box (2) so as to move the outer box (1) and the inner box (2) away from each other. The box body is provided with a non-return mechanism for preventing the outer box (1) and the inner box (2) from moving towards each other.

2. A filling device for the gap between an earth pressure box and a soil body according to claim 1, It is characterized in that The inflation device (5) is an inflation pump.

3. A filling device for the gap between an earth pressure box and a soil body according to claim 1, It is characterized in that The anti-return mechanism comprises a ratchet bar (61) and a ratchet pawl (62); the ratchet bar (61) is arranged along the relative movement direction of the outer box (1) and the inner box (2); one end of the ratchet bar (61) is connected to the inner box (2); the ratchet pawl (62) is movably connected to the outer box (1) and is matched with the ratchet bar (61) to prevent the ratchet bar (61) from moving in a direction close to the outer box (1).

4. A filling device for the gap between an earth pressure box and a soil body according to claim 3, It is characterized in that The ratchet pawl (62) is provided with an elastic pressing device (7) for pressing the ratchet pawl (62) against the ratchet bar (61).

5. A filling device for the gap between an earth pressure box and a soil body according to claim 4, It is characterized in that The elastic tightening device (7) is a spring.

6. A filling device for the gap between an earth pressure box and a soil body according to claim 5, It is characterized in that The inner wall of the outer box (1) is provided with a mounting seat (8), the mounting seat (8) comprising a top plate (81) and two side plates (82), the two side plates (82) being respectively arranged on both sides of the ratchet bar (61), the top plate (81) spans above the ratchet bar (61), and its two sides are respectively connected to the two side plates (82), the back of the ratchet (62) is connected to a sliding rod (621), the sliding rod (621) passes through the top plate (81) and is slidably connected to the top plate (81), and the spring abuts between the ratchet (62) and the top plate (81).

7. A filling device for the gap between an earth pressure box and a soil body according to claim 6, It is characterized in that The back of the pawl (62) is provided with an unlocking device (9) for allowing the pawl (62) to leave the ratchet bar (61).

8. A filling device for the gap between an earth pressure box and a soil body according to claim 7, It is characterized in that The unlocking device (9) is a pull rod connected to the end of the sliding rod (621).

9. A filling device for the gap between an earth pressure box and a soil body according to claim 7, It is characterized in that The unlocking device (9) is two electromagnets respectively connected to the pawl (62) and the top plate (81).

10. A filling device for the gap between an earth pressure box and a soil body according to claim 6, It is characterized in that A limiting block (611) is provided at the end of the ratchet bar (61), and the height of the limiting block (611) is greater than the height of the side plate (82).

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